Sorry, you want to use the last 15 minutes of one football match as evidence that the crowd don't effect the team? That's a pretty ridiculous argument, don't you think?
If I was a player it would piss me off. Perhaps not so much in games like yesterday's, but in the games that are 0-0 with a couple of minutes to go when we are desperate for a goal it would annoy me to see thousands walking out. I'd be thinking 'you stand there and shout at me and tell me what...